London weather: Health alert issued as hottest day of the year expected

All areas of England, except the North East and North West, are covered by the warnings from the UK Health Security Agency (UKHSA), which are in place from 9am on Monday until 11pm on Wednesday.

The agency said the hot weather may have "significant impacts" on the health and social care sector, particularly across the South East of England and London.

London is set to bask in 31C heat on Tuesday, which would make it the hottest day of the year.

Met Office Chief Meteorologist Frank Saunders said: “Much of the UK is entering a warm or even hot interlude of weather, with some places in England and Wales likely to meet heatwave criteria in the coming days.

“Temperatures are likely to peak at around 32C in southeast England on Tuesday and Wednesday, with much of the UK experiencing dry, fine and warm conditions in the first half of the week.”

The warm weather will continue till Thursday, when it could be interrupted by thunderstorms.

The Met Office has issued a yellow alert for thunderstorms later in the week which covers most of England and parts of Wales. It comes into force at 12am on Thursday and ends at 11.59pm.

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Weather forecast for the week

Tuesday, July 30

The sun will shine down on the capital with temperatures set to peak at 31C in the late afternoon.

Highs: 31C

Lows: 18C

Wednesday, July 31

Starting off sunny, clouds will offer some coverage for Londoners from lunchtime with temperatures expected to be the hottest across the afternoon.

Highs: 29C

Lows: 19C

Thursday, August 1

Thursday is set to be a humid one with light showers likely to rain down on the city across the afternoon.

Highs: 29C

Lows: 18C

Friday, August 2

The city will start to cool down from Friday. Temperatures are expected to drop to the mid 20s as clouds line London’s skies.

Highs: 26C 

Lows: 17C

Saturday, August 3

The weekend will see temperatures stay in the mid 20s with more rain expected to cool off the city following the bout of warm weather. 

Highs: 24C

Lows: 16C

The sun will shine down for intervals across the city on Sunday but the weather will stay cool.

Highs: 23C

Lows: 17C